Which of the following are secure device management protocols?
Each correct answer represents a complete solution. Choose all that apply.

A.
SNMPv3

B.
HTTP

C.
HTTPS

D.
SSH

Explanation:
Following are the secure device management protocols. HTTPS. Hypertext Transfer Protocol Secure (HTTPS) protocol is a protocol used in the Universal Resource Locater (URL) address line to connect to a secure site. If a site has been made secure by using the Secure Sockets Layer (SSL) then HTTPS, instead of HTTP protocol, should be used as a protocol type in the URL. SNMPv3. SNMPv3 is the current standard version of SNMP which primarily added security and remote configuration enhancements to SNMP. The IETF has designated SNMPv3 a full Internet Standard, the highest maturity level for an RFC. SNMPv3 provides important security features. Message integrity is one of the features which ensures that a packet has not been tampered with in transit. Authentication verifies that the message is from a valid source. Encryption of packets is done to prevent snooping by an unauthorized source. SSH. Secure Shell or SSH is a network protocol that allows data to be exchanged using a secure channel between two networked devices. This protocol is primarily used on GNU/Linux and Unix-based systems to access shell accounts. SSH was designed as a replacement for Telnet and other insecure remote shells, which send information, notably passwords, in plaintext, rendering them susceptible to packet analysis. The encryption used by SSH provides confidentiality and integrity of data over an insecure network, such as the Internet.

Answer B is incorrect. Hypertext Transfer Protocol (HTTP) is a client/server TCP/IP protocol used on the World Wide Web (WWW) to display Hypertext Markup Language (HTML) pages. HTTP defines how messages are formatted and transmitted, and what actions Web servers and browsersshould take in response to various commands. For example, when a client application or browser sends a request to the server using HTTP commands, the server responds with a message containing the protocol version, success or failure code, server information, and body content, depending on the request. HTTP uses TCP port 80 as the default port.
Fact What is HTTPS? Hide Hypertext Transfer Protocol Secure (HTTPS) is a combination of the Hypertext Transfer Protocol with the SSL/TLS protocol to provide encryption and secure (website security testing) identification of the server. HTTPS connections are often used for payment transactions on the World Wide Web and for sensitive transactions in corporate information systems.

Difference from HTTP
As opposed to HTTP URLs which begin with "http.//" and use port 80 by default, HTTPS URLs begin with "https.//" and use port 443 by default. HTTP is insecure and is subject to man-in-the- middle and eavesdropping attacks which can let attackers gain access to website accounts and sensitive information. HTTPS is designed to withstand such attacks and is considered secure.
Reference. http.//en.wikipediA.org/wiki/Simple_Network_Management_Protocol